package com.cn.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;
@WebFilter(
		value="/EncodingFilter",//url地址,随便写
		initParams={@WebInitParam(name="encoding",value="utf-8")}
		)
public class EncodingFilter implements Filter{

	public String encoding;
	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		encoding=filterConfig.getInitParameter("encoding");
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		request.setCharacterEncoding(encoding);
		response.setCharacterEncoding(encoding);
		response.setContentType("text/html;charset="+encoding+"");
		chain.doFilter(request, response);
	}

	@Override
	public void destroy() {
	}

}
